Configure Thunderbird for Windows

In this help article you will find step-by-step instructions how to set up your Open-Xchange (POP/IMAP) mailbox in Mozilla Thunderbird for Windows.

This article contains the following sections:

I. IMAP configuration instructions:

1. In Thunderbird, click the Menu button on the top right, choose Options and then Account Settings.

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2. On the Account Settings page, click the Account Actions button and select Add Mail Account.

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Note: Email accounts that you have already configured are listed on the left side of the Account Settings page. These email accounts correspond to the top-level folders displayed in the “All Folders list”.

 

3. When you are on the Mail Account Setup dialog box, enter Your name, Email address and Password. Select the Remember password check box and then click Continue.

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4. Thunderbird will try to determine your account settings based on your domain name, however there is no need to wait for the configuration look up to complete. Directly click on the Manual Config button.

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5. When you are on the Mail Account Setup page, use the following recommended configuration:

Incoming settings: Outgoing settings:
Server type: IMAP
Server hostname: imap.siteprotect.com
Port: 143
SSL: STARTTLS
Authentication: Normal Password
Username: Your full email address
Server type: SMTP
Server hostname: smtp.siteprotect.com
Port: 587
SSL: STARTTLS
Authentication: Normal Password
Username: Your full email address

 

email_thunderbird-115000988064-5.png

 

Important Note: If a local firewall or your Internet Service Provider (ISP) blocks ports 143 or 587, you can use alternative ports as follows:
Incoming server (IMAP) Port: 993, SSL: SSL/TLS
Outgoing server (SMTP) Port: 465, SSL: SSL/TLS

 

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6. Click Done to save the configuration and then OK on the Account Settings page to return to Thunderbird’s main window.

7. To download your existing messages to Thunderbird, click on Get Messages from the top menu.

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II. POP configuration instructions:

 1. In Thunderbird, click the Menu button on the top right, choose Options and then Account Settings.

email_thunderbird-115000988064-1.png

 

2. On the Account Settings page, click the Account Actions button and select Add Mail Account.

email_thunderbird-115000988064-2.png

 

Note: Email accounts that you have already configured are listed on the left side of the Account Settings page. These email accounts correspond to the top-level folders displayed in the “All Folders list”.

 

3. When you are on the Mail Account Setup dialog box, enter Your name, Email address and Password. Select the Remember password check box and then click Continue.

email_thunderbird-115000988064-3.png

 

4. Thunderbird will try to determine your account settings based on your domain name, however there is no need to wait for the configuration look up to complete. Directly click on the Manual Config button.

email_thunderbird-115000988064-4.png

 

5. When you are on the Mail Account Setup page, use the following recommended configuration:

Incoming settings: Outgoing settings:
Server type: POP
Server hostname: securepop.siteprotect.com
Port: 995
SSL: SSL/TLS
Authentication: Normal Password
Username: Your full email address
Server type: SMTP
Server hostname: smtp.siteprotect.com
Port: 587
SSL: STARTTLS
Authentication: Normal Password
Username: Your full email address


email_thunderbird-115000988064-8.png

 

Important Note: If a local firewall or your Internet Service Provider (ISP) blocks port 587, you can use alternative port as follows:
Outgoing server (SMTP) Port: 465, SSL: SSL/TLS

 

email_thunderbird-115000988064-9.png

 

6. Click Done to save the configuration.

 

7. After you complete the mail account setup you will be redirected back to the Account Settings page.

Make sure that under Server Settings, the Leave messages on the server check box is selected. It is also recommended to deselect the For at most 14 days check box.

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Note: The POP accounts have the option to leave messages on the server. By default, this setting is enabled. By disabling this setting Thunderbird will download your Inbox folder emails locally to your computer and then it will delete them on the mail server. Therefore, you will not see your Inbox messages any more in the OX App Suite webmail.

 

8. Click OK on the Account Settings page to save the changes and to return to Thunderbird’s main window.

9. To download your existing Inbox messages to Thunderbird, click on Get Messages from the top menu.

email_thunderbird-115000988064-11.png

 

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